| abstract |
Compouds of formula (I)n [in which: R' and R 2 are hydrogen or alkyl, or together are cycloalkyl; R 3 and R 4 are hydrogen, alkyl or phenyl, or together are cycloalkyl; or R' and R 3 together are cycloalkyl fused to the oxetane ring; Ar is phenyl optionally substituted by hydrogen, halogen, alkyl, alkoxy, halogenated alkyl or halogenated alkoxy; and R 8 and R 9 are hydrogen or alkyl] and salts thereof have valuable agricultural and pharmaceutical anti-fungal or fungicidal activity. They may be prepared by a variety of processes. |